What I'm thinking of may actually be Capsela, but I'm remembering some differences that lead me to believe it was a different, similar product. So, mid-80's robotics/engineering oriented toy. The kit I specifically remember was kind of bug-like with 6 or 8 legs, mostly black with some clear parts, and I specifically remember it being air powered and you had to physically pump up some deal first and then the air would run the motors and make it walk.
Capsela, as far as I can see, is all battery powered and I see nothing that has legs except the Bug Builder. This kit was more robot-looking than the Capsela Bug Builder kit, though.
Anyone know what it was?